<template>
  <div class="loading">
    <div class="spinner">
      <div class="spinner-container container1">
        <div class="circle1"></div>
        <div class="circle2"></div>
        <div class="circle3"></div>
        <div class="circle4"></div>
      </div>
      <div class="spinner-container container2">
        <div class="circle1"></div>
        <div class="circle2"></div>
        <div class="circle3"></div>
        <div class="circle4"></div>
      </div>
      <div class="spinner-container container3">
        <div class="circle1"></div>
        <div class="circle2"></div>
        <div class="circle3"></div>
        <div class="circle4"></div>
      </div>
    </div>
  </div>
</template>
<style>
  .loading{
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 2;
  }
  .spinner {
    width: 80px;
    height: 80px;
    position: relative;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
  }

  .container1 > div, .container2 > div, .container3 > div {
    width: 15px;
    height: 15px;
    background-color:#1c94ea;

    border-radius: 100%;
    position: absolute;
    -webkit-animation: bouncedelay 1.2s infinite ease-in-out;
    animation: bouncedelay 1.2s infinite ease-in-out;
    -webkit-animation-fill-mode: both;
    animation-fill-mode: both;
  }

  .spinner .spinner-container {
    position: absolute;
    width: 100%;
    height: 100%;
  }

  .container2 {
    -webkit-transform: rotateZ(45deg);
    transform: rotateZ(45deg);
  }

  .container3 {
    -webkit-transform: rotateZ(90deg);
    transform: rotateZ(90deg);
  }

  .circle1 { top: 0; left: 0; }
  .circle2 { top: 0; right: 0; }
  .circle3 { right: 0; bottom: 0; }
  .circle4 { left: 0; bottom: 0; }

  .container2 .circle1 {
    -webkit-animation-delay: -1.1s;
    animation-delay: -1.1s;
  }

  .container3 .circle1 {
    -webkit-animation-delay: -1.0s;
    animation-delay: -1.0s;
  }

  .container1 .circle2 {
    -webkit-animation-delay: -0.9s;
    animation-delay: -0.9s;
  }

  .container2 .circle2 {
    -webkit-animation-delay: -0.8s;
    animation-delay: -0.8s;
  }

  .container3 .circle2 {
    -webkit-animation-delay: -0.7s;
    animation-delay: -0.7s;
  }

  .container1 .circle3 {
    -webkit-animation-delay: -0.6s;
    animation-delay: -0.6s;
  }

  .container2 .circle3 {
    -webkit-animation-delay: -0.5s;
    animation-delay: -0.5s;
  }

  .container3 .circle3 {
    -webkit-animation-delay: -0.4s;
    animation-delay: -0.4s;
  }

  .container1 .circle4 {
    -webkit-animation-delay: -0.3s;
    animation-delay: -0.3s;
  }

  .container2 .circle4 {
    -webkit-animation-delay: -0.2s;
    animation-delay: -0.2s;
  }

  .container3 .circle4 {
    -webkit-animation-delay: -0.1s;
    animation-delay: -0.1s;
  }

  @-webkit-keyframes bouncedelay {
    0%, 80%, 100% { -webkit-transform: scale(0.0) }
    40% { -webkit-transform: scale(1.0) }
  }

  @keyframes bouncedelay {
    0%, 80%, 100% {
      transform: scale(0.0);
      -webkit-transform: scale(0.0);
    } 40% {
        transform: scale(1.0);
        -webkit-transform: scale(1.0);
      }
  }
</style>
